Rexburg Police said Aaron Norman Andres Archuletta approached a BYUI security officer at around 6 p.m. Wednesday and claimed responsibility for the threat on the social media internet app "Yik Yak". Archuletta was booked into the Madison County jail on a misdemeanor charge of telephone harrassment. He was being held on $10,000 bond Wednesday night.

Police Captain Randy Lewis said the first message was posted at 1:42 a.m. Wednesday and a second message a short time later. The first stated, "BYUI is in trouble tomorrow. Don't go to school." The second statement read, " This is not a joke. Your classmates or you will be hurt."